[Iaude] MPEC X166: 2021 XE4 [a=2.46,e=0.60,i=17.3,H=23.9]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Thu Dec 9 06:45:18 EST 2021
M.P.E.C. 2021-X166 Issued 2021 December 9, 11:43 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2021 XE4
Observations:
K21X04E C2021 12 02.36035 06 11 04.22 -14 32 50.9 18.2 GVEX166703
K21X04E C2021 12 02.36600 06 11 05.85 -14 30 07.1 18.7 GVEX166703
K21X04E C2021 12 02.37165 06 11 07.58 -14 27 21.7 18.6 GVEX166703
K21X04E* C2021 12 08.34789206 40 03.43 +26 40 38.9 19.12GVEX166G96
K21X04E C2021 12 08.35307906 40 04.36 +26 42 09.8 19.24GVEX166G96
K21X04E C2021 12 08.36343706 40 06.20 +26 45 11.1 19.33GVEX166G96
K21X04E mC2021 12 08.40061606 40 12.85 +26 55 57.1 19.27GVEX166I52
K21X04E mC2021 12 08.40086206 40 12.91 +26 56 01.5 19.21GVEX166I52
K21X04E mC2021 12 08.40110806 40 12.94 +26 56 05.6 VEX166I52
K21X04E mC2021 12 08.40135506 40 12.98 +26 56 09.9 VEX166I52
K21X04E mC2021 12 08.44150606 40 20.24 +27 07 40.8 19.33GVEX166I52
K21X04E mC2021 12 08.44175306 40 20.29 +27 07 44.8 VEX166I52
K21X04E mC2021 12 08.44199906 40 20.33 +27 07 49.1 VEX166I52
K21X04E mC2021 12 08.44224506 40 20.39 +27 07 53.4 19.23GVEX166I52
K21X04E KC2021 12 09.14167906 43 05.64 +30 18 36.6 19.6 VZEX166W33
K21X04E KC2021 12 09.15265506 43 07.61 +30 21 30.0 18.8 VZEX166W33
K21X04E KC2021 12 09.16364306 43 09.71 +30 24 23.7 19.7 VZEX166W33
K21X04E KC2021 12 09.25905606 43 26.88 +30 48 56.2 19.1 VuEX166H21
K21X04E KC2021 12 09.26098606 43 27.21 +30 49 25.9 uEX166H21
K21X04E KC2021 12 09.26291606 43 27.56 +30 49 55.3 uEX166H21
K21X04E KC2021 12 09.26484506 43 27.85 +30 50 25.0 19.0 VuEX166H21
Observer details:
703 Catalina Sky Survey. Observer R. A. Kowalski. Measurers B. Gray, D.
Rankin, F. C. Shelly. 0.68-m Schmidt + 10K CCD.
G96 Mt. Lemmon Survey. Observer R. A. Kowalski. Measurers E. J. Christensen,
G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
Kowalski, S. M. Larson, G. J. Leonard, D. Rankin, R. L. Seaman, F. C.
Shelly, K. W. Wierzchos. 1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 0.76-m f/3.0 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer H. Groeller. Measurers
E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, D. Rankin, R. L.
Seaman, F. C. Shelly, K. W. Wierzchos.
W33 Transit Dreams Observatory, Campobello. Observer D. Wilde. 0.36-m f/2
Schmidt-Cassegrain + CCD.
Orbital elements:
2021 XE4 Earth MOID = 0.0504 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5 Veres
M 17.88313 (2000.0) P Q
n 0.25575972 Peri. 328.77816 +0.67631817 -0.67742665
a 2.4579967 Node 76.86662 +0.72214510 +0.53232009
e 0.5977295 Incl. 17.28091 +0.14525905 +0.50766964
P 3.85 H 23.95 G 0.15 U 9
Residuals in seconds of arc
211202 703 0.2+ 0.3- 211208 I52 0.1+ 0.1+ 211209 W33 0.1+ 0.1-
211202 703 0.5- 0.5- 211208 I52 0.1- 0.1- 211209 W33 0.9- 0.0
211202 703 0.3+ 0.8+ 211208 I52 0.1- 0.0 211209 W33 0.2+ 0.6+
211208 G96 0.1+ 0.0 211208 I52 0.1- 0.1+ 211209 H21 0.0 0.1+
211208 G96 0.1+ 0.1- 211208 I52 0.0 0.2- 211209 H21 0.0 0.1+
211208 G96 0.1- 0.1+ 211208 I52 0.1- 0.1- 211209 H21 0.2+ 0.1-
211208 I52 0.1- 0.0 211208 I52 0.1+ 0.0 211209 H21 0.3- 0.1-
Ephemeris:
2021 XE4 a,e,i = 2.46, 0.60, 17 q = 0.9888
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 11 09 01 57 20.0 -78 26 09 0.1803 0.9895 84.4 85.1 23.2
...
2021 11 24 05 04 57.5 -61 08 48 0.08402 1.0014 97.3 78.0 21.3
...
2021 12 02 06 08 53.0 -17 24 46 0.05310 1.0237 134.1 43.8 19.3
...
2021 12 08 06 38 40.8 +24 56 42 0.06670 1.0468 157.0 21.6 19.2
2021 12 09 06 42 28.4 +29 41 48 0.07169 1.0512 156.6 21.8 19.4
2021 12 10 06 45 58.8 +33 47 40 0.07715 1.0557 155.8 22.5 19.6
...
2021 12 16 07 01 50.3 +48 57 59 0.1160 1.0853 149.0 27.8 20.7
...
2021 12 24 07 12 38.1 +57 07 46 0.1757 1.1311 144.4 30.4 21.8
...
2022 01 08 07 16 56.0 +61 00 58 0.2999 1.2317 141.3 30.0 23.1
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-X166
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